export default{
	namespaced: true,
	state: () => ({
		cart: JSON.parse(uni.getStorageSync('cart') || '[]')
	}),
	
	mutations: {
		addToCart(state, goods) {
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)
			console.log(findResult)
			
			
			if(!findResult) {
				state.cart.push(goods)
			}
			else{
				findResult.goods_count++
			}
			
			console.log(state.cart)
			
			this.commit('m_cart/saveToStorage')
			
		},
		saveToStorage(state) {
			uni.setStorageSync('cate', JSON.stringify(state.cart))
		},
		//更新购物车中商品的选中状态
		updataGoodsState(state ,goods){
			const findResult =  state.cart.find(x => x.goods_id === goods.goods_id)
			
			if(findResult){
				findResult.goods_state = goods.goods_state
				
				this.commit('m_cart/saveToStorage')
			}
		},
		//更新商品的数量
		updateGoodsCount(state, goods) {
			const findResult = state.cart.find(x => x.goods_id === goods.goods_id)
			if(findResult){
				findResult.goods_count = goods.goods_count
				
				this.commit('m_cart/saveToStorage')
			}
		},
		//根据ID删除对应的商品
		removeGoodsById(state, goods_id){
			state.cart = state.cart.filter(x => x.goods_id !== goods_id)
			
			this.commit('m_cart/saveToStorage')
		},
		//更新购物车中所有商品的选中状态
		updateAllGoodsState(state, newState) {
			state.cart.forEach(x => x.goods_state=newState)
			this.commit('m_cart/saveToStorage')
		}
	},
	
	getters: {
		//购物车中蓑鲉商品的总数量
		total(state) {
			
			return state.cart.reduce((total,item) =>  total+=item.goods_count,0)
		},
		//购物车中已勾选的总数量
		checkedCount(state) {
			return state.cart.filter(x => x.goods_state).reduce((total,item) => total+=item.goods_count, 0)
		},
		checkGoodsAmout(state) {
			return state.cart.filter(x => x.goods_state).reduce((total,item) =>total+=item.goods_count*item.goods_price ,0).toFixed(2)
		}
	}
}